NCS000580_MONITORING INFO_20191220

STORMWATER DIVISION CODING SHEET
NCS PERMITS
PERMIT NO.
/V LS U o o S
DOC TYPE
❑FINAL PERMIT
MONITORING REPORTS
❑ APPLICATION
❑ COMPLIANCE
❑ OTHER
DOC DATE
❑
YYYYMMDD

KE
E'ERGY,
PROGRESS
File: Mayo 12520-R
NC 11gpartment of Environmental Quality
Division of Water Quality
ATTE TION: Central Files
1617 Plail Service Center
Raleig i, North Carolina 27699-1617
' Z'V Z ...d December 16, 2019
DEC 2 0 2�19
Mayo Steam Plant
Duke Energy Progress
10660 Boston Road
Roxboro, NC 27574
Subject: 15A N. C. Admin. Code 213 .0506
Mayo Electric Generating Plant
National Pollutant Discharge Elimination System Stormwater Permit NCS000580
Stormwater Discharge Outfalls 002 and 010 Monitoring Report
Dear Sir or Madam:
In accordance with Part III. Section E2 of NPDES Stormwater Permit Number NCS000580, enclosed is
the year 3, November 2019 Stormwater Discharge monitoring report for Outfalls 002 and 010 for Duke
Energy Progress, LLC. - NPDES Stormwater Permit Number NCS000580. To note, Outfalls 002 and 010
are in tiered status.
I certify, under penalty of law, that this document and all attachments nvere prepared under my direction or
supervision in accordance witlr a system designed to assure that qualified personnel properly' gather and evaluate
the information subinitted. Based on nny inquiry, of the person or persons svho manage the system, or those persons
directly responsible fiar gathering the info•nnation, the information subnnitted is, try the best of nny knovleclge and
belief, true, accurate, and complete. 1 am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations.
Please contact Ms. Lori Tollie at [phone] if there are any questions concerning the data in this
submittal.
Sincerely,
�r
Toni Copolo- Manager
Mayo Electric Generating Plant
Enclosures
LPW/lpw

r
STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number: NCS000580 SAMPLES COLLECTED DURING CALENDAR YEAR: 2019
(This monitoring report shall be received by the Division no later than 30 days from
the date the facility receives the sampling results from the laboratory.)
FACILITY NAME Mayo Electric Steam Plant COUNTY Person
PERSON COLLECTING SAMPLE(S) John Arthur Cole PHONE NO. [phone]
CERTIFIED LABORATORY(S) Duke, Shealy Lab# 248 & 329
_Mayo Plant Lab Lab #_5064
SIGNATURE OF PERMITTEE OR DESIGNEE
REQUIRED ON PAGE 3.
Part A: Specific Monitoring Requirements
OutfalL ; _
No
Date. "
Sample Collected
00400-
39516ti .
.. ' '01119.:
00981"`=
, , 71901'
01092 .
-0053Q:.:
Xotal '
Rail' fa114
-W
IPCBs .
�:Co er'
.PP ,-
Total'
„ �Selenmm
;Total
.'.Mercury z
Y
Total `
Zinc- ��
„Total
TSS
-Non-Polar`. F.
<.
Oit &Grease
mo/dd/yr.
inches
Standard
: m
=m
m Y
to
m
Fm
Benchmark
6-9
Detected
0.010
0.056
NIAI
0.126
100
15
002
11/12/19 @ 14:35
0.54
7.38
ND<0.40
0.00342
<0.001
0.00000322
0.013
9.3
ND<5.0
010
11/12/19 @ 13:10
0.54
6.39
Not Tested
0.00460
<0.001
0.00000550
0.008
15
ND<5.0
dditional'Priority;P611utanYMetals'
A . 00999;:
;. 01079:
. 00978
p00998 :
01113
01ll8, ,
01074f, t
.__:OIll4"
`01268. `
00982 .
No
'BoronS .-
Age
As
Be
Cd'
Cr!?
N�'
Vb'
Sb-
-_Tl'
0.00000
mg/l ♦
; mg/l.
mom' ,
mg/1:2 :
mg/l
Q mg/l x
. m
y.mgtl
In
m
Benchmark
N/A(monitor only)
0.0003
0.34
0.065
0.003
0.9
0.335
0.075
0.09
NIA (monitor only)
002
<0.05
<0.0002
<0.001
<0.001
<0.001
0.00168
<0.001
<0.001
<0.001
<0.0002
010
<0.05
<0.0002
<0.001
<0.001
<0.001
0.00236
0.00196
<0.001
<0.001
<0.0002
Form SWU-247, last revised 2/212012
Page I of 3

Footnotes: Permit # NCS000580 (Part IIrt II (Part 7 of 15)
4. For each sampled measureable storm event, the total precipitation must be recorded. An on -site rain gauge
is required. Where isolated sites are unmanned for extended periods of time, a local rain gauge reading
may be substituted for an on -site reading.
S. These parameters shall be monitored only if coal or coal ash is transported through the drainage
areas of these outfalls during the semi-annual monitoring period in Table 2.
Footnotes: -Permit # NCS000580 (Part ll.Page-9_of 15 )
1. Hardness- dependent. Benchmark based on translation of dissolved value into total recoverable with
an assumed hardness of 25 mg/I and a total suspended solids (TSS) concentration of 10 mg/l.
2. Values above the North Carolina water quality standard for mercury (12 ng/1) should be noted on the
DM R but do not trigger Tier responses. Concentrations infield blanks or method blanks associated
with the sample may be subtracted from the results for thatsample, as long as all documentation of the
adjustment is provided with the DMR.
3. if pH values outside this range are recorded in sampled stormwater discharges, but ambient
precipitation pH levels are lower, then the lower threshold of this benchmark range is the pH of the
precipitation (within instrument accuracy) instead of 6 S.U. Readings from an on -site or local rain
gauge (or local precipitation data) must be documented to demonstrate background concentrations
were below the benchmark pH range of 6- 9.
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month'? _yes _X_no
(if yes, complete Part B)
Part B: Vehicle Maintenance Activity Monitoring Requirements
Outfall
No.
Date
Sample
Collected •'
50050;
00556-
00530 :
00400
Total Flow
(if applicable)
Total
Rainfall
Oil & Grease
(if.appl.)
Non -polar
O&G/TPH
(Method 1664
SGT-HEM), if
Total
Suspended
Solids
pH
New Motor
Oil Usage
d
moldd/ r . ,
tV1G.;
inches.
in
-
m
unit
allmo
Form SWU-247. last revised 2/212012
Pace 2 of 3

Comments:
• Outfall 010: Tier One
• Outfall 002. Tier Two
STORM EVENT CHARACTERISTICS:
Date: 11/12/2019
Total Event Precipitation (inches): 0.54
Event Duration (hours): n hours 20 minutes (only if applicahle — see permit.)
(if more than one storm event was sampled)
Date
Total Event Precipitation (inches):
Event Duration (hours): (only if applicable — see permit.)
Mail Original and one copy to:
Division of Water Quality
Attn: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a
system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person
or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the
best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations."
(Signature of
Ia-%tr hi
(Date)
Form SWU-247, lust revised 21212012
Page 3 of 3